Window-lock



'A. J. HUFFER. wmnow LOCK. APPLICATION FILED JUNE 12. 1919- Patented Aug. 31,1920.

3 H EET I I 2 SHEETS- Whine/owe 5Q, 3

A. J. HUFFEB. WINDOW LOCK.

APPLICATION FILED JUNE 12, I9I9.

' 1,351,650. Patented Aug. 31, 1920.

2 SHEETS-SHEET Arthur I] Hufier wade/once attowmzw UNITED V F t:

WINDOW-LOCK.

Specification of LettersfPatent.

Application filed June 12, 1919. Serial No. 303,844.

To all whom it may concern:

I upright.

Be it known that I, ARTHUR J. Herman, a citizen of the Un ted States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in W1ndow- Locks, of which the following is a specific-a tion.

This invention relates to improvements 1n sash locks and the principal object of the invention isto provide means for locking the sash in either a closed position or in a partly open position.

Another object of the'invention is to provide means whereby the sash may have a limited movement while being held in locked position. V

The invention also consistsin certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifi-' cally pointed out in the appended claim.

In describing my invention indetail, ref erence will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the sev 'eral views, and in which I Figure l is a plan view of the invention;

Fig. 2 is a like View with the sashes in fully locked position; I

Fig. 3 is a section on line 33 of Fig. 1;

F 4 is a front view of the portion of the lock carried by the upper sash;

Fig. 5 is a section on line 5-5 of Fig. 1;

F (5 is a front view showing the sashes in partly raised position and locked.

In these views A indicates the upper sash and B the lower sash. A plate 1 is secured to the lower. rail of theupper sash and this plate is provided with an upright 2. A

slotted lever 3 has one end pivoted to this The pivoted end of this lever is provided with a small projection 4 at its top edge for cooperating with the locking means to hold the sash in locked position when fully closed. The end of the'slot 5, adja cent the pivot of the lever, is enlarged as at 6 for a purpose to be hereinafter described.

A casing 7 is connected to the upper rail of the lower sash and a locking member 8 is located within said casing and is'pivotally mounted. therein by means of the pin 9 which passes through the top of the casing and receives the operating lever 10 which has a finger-engaging portion extending in ,jection 13 to is provided with an annulargroove l4 and an inclined outer end. When the sashes are mclosed posltion and the finger'lever 10 moved to the position shownin Fig. 1, the end 18 of the locking memberwill pass through the enlarged part 6 of the slot 5 so that when the lower sash is raised or the upper sash lowered the. end 13 will raise the lever 3 by passing upwardly through the slot 5 therein and when theend of the slot .is reached further movement of the sashes will be prevented so that the sashes are held against further movement and as the lever 3 is short the sashes cannot; be opened sufiiciently to permitthe passage of a large body therethrough. Thus the sashes may be held in ventilating position while preventing intruders from entering the room. In order to unlock the sash it is necessary-to move it into closed position to permit the propass through the enlarged part 6 of the slot.

It'will thus be seen that the sashes may be spring washer 11 This member 8 is provided with V PatentedAug. 31, 1920.

held in either a fully closed position or in a partlyopen position. 7

It will also 'be seen that the hook 12 will draw the two sashes together when in locking position, as in an ordinary lock.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

.I desire it to be understoodthat I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

What I claim is Adevice of the class describedcomprising a casing connected with the top of the lower sash, a vertical shaft journaled in'said casing and having its upper end projecting therefrom, a hand lever connected withsaid;

projecting end, a locking member carried by theiinner end of said shaft, said member having a hook at one end and a groove in its other end, the casing having an opening in one side through which said hook and grooved part are adapted to extend, a, plate carried by the lower rail of the upper sash, an upright on said plate, a slotted lever pivoted to said upright and having a projecting reduced end extending beyond the pivotal point and adapted to be engaged by the hook on the locking member when the plate is in horizontal position and said slot having an enlarged lower end for receiving the grooved end of the looking member for guiding said end into the upper part of the 7 slot to permit the sash to be opened to a limited extent.

ARTHUR J; I-IUFFER. 

